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52 lines
1.0 KiB
C
52 lines
1.0 KiB
C
/*
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* Copyright (C) 2022 ML!PA Consulting GmbH
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @defgroup sys_checksum_crc32 CRC32
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* @ingroup sys_checksum
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*
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* @brief CRC32 checksum algorithm implementation according to IEEE standards
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* @{
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*
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* @file
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* @author Benjamin Valentin <benjamin.valentin@ml-pa.com>
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*/
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#ifndef CHECKSUM_CRC32_H
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#define CHECKSUM_CRC32_H
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#include <stddef.h>
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief CRC-32 checksum
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*
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* Uses the `0xedb88320` polynomial
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*
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* @note enable the `crc32_fast` module for a look-up table based implementation
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* that trades code size for speed.
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*
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* @param[in] buf The data to checksum
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* @param[in] size Length of the data in bytes
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*
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* @return 32 bit sized hash in the interval [0..2^32]
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*/
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uint32_t crc32(const void *buf, size_t size);
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#ifdef __cplusplus
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}
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#endif
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#endif /* CHECKSUM_CRC32_H */
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/** @} */
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